2001 DHS code questions
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, 2001 DHS code questions in Past Cadillac Vehicle Discussion; IM BOUT TO BUY A 2001 DHS WIT 80k MILES THA GUY SAY I PULL THA CODES I LOOK THEM ...
  1. #1
    markcheck is offline Cadillac Owners Member
    Automobile(s): 1994 cadillac sedan deville
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    2001 DHS code questions

    IM BOUT TO BUY A 2001 DHS WIT 80k MILES THA GUY SAY I PULL THA CODES I LOOK THEM UP BUT DON'T UNDERSTAND WHAT THEY MEAN ITS A LOT THEM BUT ARE THEY SERIOUS CAN U HELP ME PLZ.
    DDM U1000-CLASS 2 COMMUNICATION MALFUNCTION
    IPC U1000
    IPM B0429-TEMPERATURE CONTROL#3 REAL CIRCUIT RANGE PERFORMANCE
    IRC U1000
    LRD U1000
    MSM U1000
    PCM P410-SECONDARY AIR INJECTION(air) SYSTEM
    PDM B1586-MIRROR HORIZ POS SENSOR OUT OF RANGE OPEN
    PDM B1591-MIRROR VERT POS SENSOR OUT OF RANGE OPEN
    PDM U1000
    RIM U1000
    RRD U1000
    SDM B1001-OPTION CONFIGURATION ERROR
    TTM U1000

    R they codes ok to buy this car or not what should I do thanks this site is the BEST.

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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, stick on fender vents
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    Re: have a ? 01 DHS

    Your caps lock is stuck.

    U codes are voltage and data-related. If the battery was low or disconnected, U codes appear.
    B0429 - Rear temperature circuit - the door or actuator that sends air to the rear seat console.
    P0410 - an emissions fail code and refers to the AIR system - the old "smog pump" idea that supplies fresh air to the exhaust manifolds on cold start in order to quickly light off the cat. Couple of hours and $250 to DIY fix. (Look about 5 threads away from this one - your question was already posted ...................)

    The mirror codes are anyone's guess - troubleshooting time.

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Re: 2001 DHS code questions

    B0429 is so common it's considered a standard feature. Just means that the rear temperature actuator does not have the door in the commanded position. I've been told it does not take much to set this code. Rear seat passengers might not even notice it, but just for the hell of it, run the rear seat temp control up to max and down to min once or twice. Then clear the code and see if it comes back.

  5. #4
    markcheck is offline Cadillac Owners Member
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    Ok I did what ranger told me to do and clear tha codes to see what comes back. Now with that DDM U1000 im pretty sure that's y the driver door panel don't work will not lock or unlock the door or either roll tha windows down. How can I check that once thanks guys

  6. #5
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Re: 2001 DHS code questions

    Since you have so many modules with a U1000 code, I would tend to think it is not DDM related, but some other common denominator. Maybe a common ground?

  7. #6
    basscatt's Avatar
    basscatt is offline Cadillac Owners Master
    Automobile(s): 89 Coupe DeVille, 95 Sedan DeVille, 03 SLS, two 02 DHS's
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    Re: 2001 DHS code questions

    Quote Originally Posted by markcheck View Post
    Ok I did what ranger told me to do and clear tha codes to see what comes back. Now with that DDM U1000 im pretty sure that's y the driver door panel don't work will not lock or unlock the door or either roll tha windows down. How can I check that once thanks guys
    -------------------------------
    check the fuses under the back seat -
    pay particular attention to #3 and #5

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